authentication fail in web connector for connecting quickbooks

_x000D_ _x000D_ i am using localhost but please assume domainname.com is a localhost QBWebConnector.WebServiceManager.DoUpdateSelected() : updateWS() for application = 'My QuickBooks SOAP Server' has STARTED 20140805.11:34:53 UTC : QBWebConnector.RegistryManager.getUpdateLock() : HKEY_CURRENT_USER\Software\Intuit\QBWebConnector\UpdateLock = FALSE 20140805.11:34:53 UTC : QBWebConnector.RegistryManager.setUpdateLock() : HKEY_CURRENT_USER\Software\Intuit\QBWebConnector\UpdateLock has been set to True 20140805.11:34:53 UTC : QBWebConnector.RegistryManager.setUpdateLock() : ***************** Update session locked ***************** 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.instantiateWebService() : Initiated connection to the following application. 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.instantiateWebService() : AppName: My QuickBooks SOAP Server 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.instantiateWebService() : AppUniqueName (if available): My QuickBooks SOAP Server 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.instantiateWebService() : AppURL: http://domainname.com/magece17/quickbooks-php-master/docs/web_connector/example_web_connector.php 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.do_serverVersion() : * Calling serverVersion(). 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.do_serverVersion() : Actual error received from web service for serverVersion call: . For backward compatibility of all webservers, QBWC will catch all errors under app-not-supporting-serverVersion. 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.do_serverVersion() : This application does not contain support for serverVersion. Allowing update operation for backward compatibility. 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.do_clientVersion() : Calling clientVersion() with following parameter: 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.updateWS() : Actual error received from web service for clientVersion call: . For backward compatibility of all webservers, QBWC will catch all errors under app-not-supporting-clientVersion. 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.do_clientVersion() : This application does not contain support for clientVersion. Allowing update operation for backward compatibility. 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.do_authenticate() : Authenticating to application 'My QuickBooks SOAP Server', username = 'quickbooks' 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.do_authenticate() : Calling authenticate() with following parameters: 20140805.11:34:53 UTC : QBWebConnector.SOAPWebService.do_authenticate() : QBWC1012: Authentication failed due to following error message. The server committed a protocol violation. Section=ResponseStatusLine More info: StackTrace = at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request) at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request) at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) at QBWebConnector.domainname.com.WCWebServiceDoc.authenticate(String strUserName, String strPassword) at QBWebConnector.domainname.com.WCWebService.authenticate(String strUserName, String strPassword) at QBWebConnector.SOAPWebService.authenticate(String UserName, String Password) at QBWebConnector.WebService.do_authenticate(String& ticket, String& companyFileName) Source = System.Web.Services 20140805.11:34:53 UTC : QBWebConnector.RegistryManager.setUpdateLock() : HKEY_CURRENT_USER\Software\Intuit\QBWebConnector\UpdateLock has been set to False 20140805.11:34:53 UTC : QBWebConnector.RegistryManager.setUpdateLock() : ******************* Update session unlocked ***************** 20140805.11:34:53 UTC : QBWebConnector.WebServiceManager.DoUpdateSelected() : Update completed with errors. See log (QWClog.txt) for details.